C

#include <bits/stdc++.h>

using namespace std;

#define ll     long long
#define _test   int _TEST; cin>>_TEST; while(_TEST--)
#define ff     first
#define ss     second
#define pb     push_back
#define ppb    pop_back

int main()
{
    int num[9] = {1, 10, 100, 1000, 10000, 100000, 1000000, 10000000, 100000000};

    _test
    {
        ll int a, b, c, k;
        cin>>a>>b>>c>>k;

        int ansa=-1, ansb;

        for(int i=num[a-1]; i<num[a]; i++)
        {
            int minb = max(num[b-1], num[c-1] - i);
            int maxb = min(num[b]-1, num[c]-1 - i);

            if(maxb < minb)     continue;

            int options = maxb - minb + 1;

            if(options >= k)
            {
                ansa = i;
                ansb = minb + k - 1;
                break;
            }

            k -= options;
        }

        if(ansa == -1)
        {
            cout<<-1<<"\n";
            continue;
        }

        cout<<ansa<<" + "<<ansb<<" = "<<ansa+ansb<<"\n";
    }
}